<?php

header("content-Type: textml; charset=utf-8");

//備份數(shù)據(jù)庫

$host="192.168.1.149";

$user="root";//數(shù)據(jù)庫賬號(hào)

$password="root";//數(shù)據(jù)庫密碼

$dbname="weixin";//數(shù)據(jù)庫名稱 //這里的賬號(hào)、密碼、名稱都是從頁面?zhèn)鬟^來的

$pdo=newPDO("mysql:host=$host;dbname=$dbname",$user,$password);

if(!$pdo)//連接mysql數(shù)據(jù)庫

{

echo'數(shù)據(jù)庫連接失敗，請(qǐng)核對(duì)后再試';exit;

}

$pdo->exec("set names 'utf8'");

$mysql="set charset utf8;\r\n";

$q1=$pdo->query("show tables");//獲取數(shù)據(jù)庫的表名

while($t=$q1->fetch())

{

$table=$t[0];

$q2=$pdo->query("show create table `$table`");

$sql=$q2->fetch();

$mysql.=$sql['Create Table'].";\r\n";

$q3=$pdo->query("select*from `$table`");

while($data=$q3->fetch(PDO::FETCH_ASSOC))

{

$keys=array_keys($data);

$keys=array_map('addslashes',$keys);

$keys=join('`,`',$keys);

$keys="`".$keys."`";

$vals=array_values($data);

$vals=array_map('addslashes',$vals);

$vals=join("','",$vals);

$vals="'".$vals."'";

$mysql.="insert into `$table`($keys) values($vals);\r\n";

}

}

$filename=$dbname.".sql";//存放路徑，默認(rèn)存放到項(xiàng)目最外層

$fp=fopen($filename,'w');

fputs($fp,$mysql);

fclose($fp);

//header實(shí)現(xiàn)下載

header('content-type:application/octet-stream');

header("content-disposition:attachment;filename=$filename");

//讀取文件內(nèi)容

readfile($filename);

?>